[petsc-dev] P3DFFT is an open-source numerical library providing highly scalable implementation of 3D spectral transforms

[Jed Brown]

Barry Smith <bsmith at mcs.anl.gov> writes:
>    My statement is based on experience, not models. I stand by it and
>    yes it can be factors of that magnitude.  Now one could argue 3
>    times faster so what, but if you are doing this solve millions of
>    times and it is the most time consuming part of the simulation (by
>    far) then it adds up.

Here is one comparison:

http://dx.doi.org/10.1103/PhysRevE.88.063308
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